Home / 30,435.40-45,653.70-13,792.36

Finding the Fourth Proportional to 30,435.40, 45,653.70 and 13,792.36

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Solution

The fourth proportional to 30,435.40, 45,653.70 and 13,792.36 is: 20,688.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,435.40 : 45,653.70 = 13,792.36 : x
  2. Step 2: Convert to fraction form
    30,435.40/45,653.70 = 13,792.36/x
  3. Step 3: Cross multiply
    30,435.40x = 45,653.70 × 13,792.36
  4. Step 4: Simplify right side
    30,435.40x = 629,672,265.73
  5. Step 5: Solve for x
    x = 629,672,265.73/30,435.40
  6. Step 6: Final answer
    x = 20,688.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.